In telecommunication, data transfer is gaining more importance and the relational part of voice calls is decreasing. Related to this, digital convergence is taking place: telecommunication devices and data transfer devices are going to have more and more features in common. 

The third generation of telecommunication products, that will be first taken into public use in Japan in 2001, will offer high data transfer rates for mobile users, making possible for example convenient internet browsing, video conferencing, and truly mobile office with access to all data bases, to name a few applications. However, this means that in the hand held products more power consuming processors and memories are needed, the RF amplifiers will have longer on-times, and the operation frequencies of digital circuits will increase. Simultaneous- ly, the miniaturization of consumer telecommunication devices puts more functions into smaller volume. This brings us a relation where the dissipated heat intensities are increasing tremendously.

In thermal management this brings newchallenges: previously the main task was to transfer the heat from thecomponent, but now it will be at least as important to dissipate the heatfrom the system and to keep the enclosure surface cool enough forconvenient and safe use. To reach the optimum solution, thermal management has to be taken into account in different areas ofelectronics design, with different means towards the common target.
 

Fly fishing goes back hundreds of years, long before Dame Juliana Berners wrote the first book on the subject. The first few hundred years were all about developing gear and techniques. We’ve gone from fishing in the local brooks with braided horse-hair fishing lines on willow poles to flying thousandsof miles to fish for the “Biggest Rainbows in the World” using hydrophobic-plastic-encased fly lines cast with boron composite fly rods designed by aero-elasticians.

The biggest change, however, has come in our husbandry of the streams: “How do we keep clean water flowing?”

We’ll start with Dame Berners’description of the joys and benefits of fishing, written in 1421and still true! She’ll advise us on where and when to fish, how to braid horse-hair fishing lines, and how to tie her favorite fly patterns.

I’ll demonstrate the equipment worn by the modern “well-dressed fisherman,” show some still-pictures and videos of the fish we are trying to catch, and talk a bit about the technical and political problems involved in re-building our sport fisheries.